Conveners
Posters, Exhibition and Necsa Visit
- Frikkie De Beer (Necsa)
Mr
Frikkie De Beer
(Necsa)
23/09/2013, 15:10
Poster
Poster Presentation
A couple of posters from Necsa:
NEUTRONS:
2 x posters: Geoscience
1 x poster: Reverse Engineering
1 x poster: Civil Engineering
1 x poster: complementary - neutron and X-rays
1 x New upgrade Neutron Imaging facility
X-RAYS:
1 x poster: Anatomy
2 x posters: Archaeology
1 x Poster: Palaeontology
Dr
Gérard Subsol
(LIRMM-CNRS, France)
23/09/2013, 15:10
Poster
Poster Presentation
In the context of microfocus X-ray imaging of fossils that constitutes an important part of the heritage in a country, more and more digital 3D images are being sent over computer networks. Institutions curating fossil collections attribute legal and ethical weight to these data; acknowledging their own rights and thereby willing to ensure the protection of data in their possession. From a...
Mr
Christian Deschodt
(Rhodes University)
23/09/2013, 15:10
Poster
Poster Presentation
Macroderes Westwood (Scarabaeidae: Scarabaeinae) is a flightless dung beetle genus that is endemic to Namaqualand in the arid South-West of South-Africa. All species are strongly convex in shape and show uniform morphology. This makes it difficult to separate them even with the use of a conventional light microscope. Furthermore, some species are known only from single up to very few...
Dr
Marijke Fagan
(University of Cape Town)
23/09/2013, 15:10
Poster
Poster Presentation
Heap bioleaching is gaining importance as a technique for the recovery of valuable metals (such as copper) from low grade ores. In this process iron and/or sulfur oxidising microorganisms are used to aid the oxidation of base metal sulfides in the ore, thereby liberating the metal ions into solution. The heaps are highly heterogeneous systems, both with respect to heap structure and the ore...
Dr
Anna Oettle
(University of Pretoria)
23/09/2013, 15:10
Poster
Poster Presentation
Researchers and educationalists in the field of Anatomy constantly seek representations of structures that reflect the realm in which clinicians need to operate. Along with newer radiographic techniques creating new possibilities in diagnosis and treatment, the required anatomical knowledge to interpret these images also evolved. The high resolution images derived by Cone Beam computerized...
Ms
Safiyyah Iqbal
(University of the Witwatersrand, Evolutionary Studies Institute)
23/09/2013, 15:10
Poster
Poster Presentation
Therapsids were severely affected by the Permian-Triassic mass extinction event and only a few lineages were able to survive. One of the main behavioural responses that most likely aided in Therapsid survival across the extinction event was burrowing. Several fossils of the therapsid, Thrinaxodon were found in curled up position and assumed to have died in a burrow, leading to the idea that...
Mr
Lunga Bam
(Necsa)
23/09/2013, 15:10
Poster
Poster Presentation
High contrast visualization and thus correct identification of high density materials within rocks and drill cores without line, ring and other artifacts is a challenge – e.g. high quality visualization and quantification of gold particles embedded within the rock matrix is important in the mining industry to enhance processes for higher yield in gold extraction. Micro CT was successfully...
Mrs
Wilma Clark
(Mintek)
23/09/2013, 15:10
Poster
Poster Presentation
The possibility of using 3D neutron tomography to determine the geometrical properties of iron ore particles is explored in this study. Neutron tomography is a non-destructive technique enabling observation of the surface and interior of solid material and is an ideal tool for 3D geometrical analysis of irregularly shaped particles. Shape and size analysis is done using “Octopus”, “VGStudio...
Mrs
Rene Human-Baron
(University of Pretoria)
23/09/2013, 15:10
Poster
Poster Presentation
The midline mandibular lingual canal (MMLC) contains a blood vessel that may haemorrhage if perforated leading to haematoma formation of the floor of the mouth and airway obstruction. The proximity of the implant site to the midline lingual canal is pivotal when dental implants are planned. This study sets out to decide whether a possible implant in the midline of the mandible is feasible in...
Mr
Robert Nshimirimana
(NECSA)
23/09/2013, 15:10
Poster
Poster Presentation
The South African Radiography and Tomography Centre (SANCRAT) hosts a Microfocus X-ray tomography system (µCT) which is extensively being utilized in non-destructive examination research projects originating from higher educational institutes and research councils. In the biosciences field of application, oranges for export have to be free of infestation (larvae from moths and fruit flies);...
Dr
Teresa Kearney
(Ditsong National Museum of Natural History)
23/09/2013, 15:10
Poster
Poster Presentation
Horseshoe bats use an adapted auditory and echolocation system to navigate and hunt fluttering prey while flying in the dark amongst vegetation. To overcome the challenge of distinguishing prey from echoes produced by the vegetation, horseshoe bats have developed an intricate coupling of the auditory and vocalizing systems. They combine a long, constant frequency (CF) signal, that has short...
Ms
Tshepiso Mokhoro
(Stellenbosch University)
23/09/2013, 15:10
Poster
Poster Presentation
Micro-structure of whole maize kernels were characterised using X-ray micro computed tomography (μCT). Kernels, differing in hardness, germinated for 0 h, 10 h and 22 h, followed by freeze drying, were scanned for 25 min. Results were depicted as two dimensional 2D slice images obtained from three dimensional (3D) volumes. Difference in endosperm texture of the 0 h kernels could be observed in...
